package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.exception.BizCodeEnum;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.auth.constant.AuthServerConstant;
import com.atguigu.gulimall.auth.feign.MemberFeignService;
import com.atguigu.gulimall.auth.feign.ThirdPartyFeignService;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.common.vo.UserLoginVo;
import com.atguigu.common.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * @description:
 * @author: BlueSky
 * @create: 2021-09-19 11:10
 **/
@Controller
public class LoginController {

	@Autowired
	ThirdPartyFeignService thirdPartyFeignService;

	@Autowired
	StringRedisTemplate redisTemplate;

	@Autowired
	MemberFeignService memberFeignService;

	@ResponseBody
	@GetMapping("/sms/sendcode")
	public R sendCode(@RequestParam("phone") String phone) {

		String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
		if (!StringUtils.isEmpty(redisCode)) {
			long l = Long.parseLong(redisCode.split("_")[1]);
			//校验手机验证码的过期时间是否小于1分钟
			if (System.currentTimeMillis() - l < 60000) {
				//60秒内不能发送
				return R.error(BizCodeEnum.SMS_CODE_EXCEPTION.getCode(), BizCodeEnum.SMS_CODE_EXCEPTION.getMsg());
			}
		}

		//TODO 1.接口防刷
		//2、验证码的再次校验。redis。存Key-phone,value-code  sms:
		String code = UUID.randomUUID().toString().substring(0, 5) + "_" + System.currentTimeMillis();

		//redis缓存手机验证码，防止同一个phone在60秒内再次发送验证码
		redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone, code, 10, TimeUnit.MINUTES);

		thirdPartyFeignService.sendCode(phone, code);
		return R.ok();
	}


	@PostMapping("/regist")
	public String regist(@Valid UserRegistVo vo, BindingResult result, RedirectAttributes redirectAttributes) {

		if (result.hasErrors()) {
			// Map<String, String> errors = new HashMap<>();

			/**
			 * result.getFieldErrors().stream().map(fieldError -> {
			 * 				String field = fieldError.getField();
			 * 				String defaultMessage = fieldError.getDefaultMessage();
			 * 				errors.put(field,defaultMessage);
			 * 				return errors;
			 *            });
			 */

			/**
			 * result.getFieldErrors().stream().collect(Collectors.toMap(fieldError -> {
			 * 				return fieldError.getField();
			 *                        }, fieldError -> {
			 * 				return fieldError.getDefaultMessage();
			 *            }));
			 */

			Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(FieldError::getField,
					FieldError::getDefaultMessage));
			// model.addAttribute("errors",errors);
			redirectAttributes.addFlashAttribute("errors", errors);
			//校验错误，转发到注册页

			//forward()路径映射转发默认是get请求，而注册提交为post，
			return "redirect:http://auth.gulimall.com/reg.html";
		}
		//1、校验验证码
		String code = vo.getCode();

		String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
		if (!StringUtils.isEmpty(s)) {
			if (code.equals(s.split("_")[0])) {
				//删除验证码；令牌机制
				// redisTemplate.delete();
				//验证码通过。
				// 真正注册。调用远程服务进行注册
				R r = memberFeignService.regist(vo);
				if (r.getCode() == 0) {
					//成功

				} else {
					Map<String, String> errors = new HashMap<>();
					errors.put("msg",r.getMessage());
					redirectAttributes.addFlashAttribute("errors",errors);
					 return "redirect:http://auth.gulimall.com/reg.html";
				}


			} else {
				Map<String, String> errors = new HashMap<>();
				errors.put("code", "验证码错误");
				redirectAttributes.addFlashAttribute("errors", errors);
				return "redirect:http://auth.gulimall.com/reg.html";
			}
		} else {
			Map<String, String> errors = new HashMap<>();
			errors.put("code", "验证码错误");
			redirectAttributes.addFlashAttribute("errors", errors);
			//校验出错，转发到注册页
			return "redirect:http://auth.gulimall.com/reg.html";

		}


		return "redirect:/login.html";
	}

	@GetMapping("/login.html")
	public String loginPage(HttpSession session){
		Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
		if (attribute == null){
			//没登录过
			return "relogin";
		}else {
			return "redirect:http://gulimall.com";
		}
	}

	@PostMapping("/login")
	public String login(UserLoginVo vo, RedirectAttributes redirectAttributes, HttpSession session){
		//远程登录
		R login = memberFeignService.login(vo);
		if (login.getCode()==0){
			//成功
			MemberRespVo data = login.getData(new TypeReference<MemberRespVo>() {
			});
			session.setAttribute(AuthServerConstant.LOGIN_USER,data);
			return "redirect:http://gulimall.com";
		}else {
			Map<String, String> errors = new HashMap<>();
			errors.put("msg",login.getMessage());
			redirectAttributes.addFlashAttribute("errors",errors);
			return "redirect:http://auth.gulimall.com";
		}
	}

}
